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Just a quickie really - this is not an image map! It is a 2-colour pigment
pattern. I've developed a relatively quick way of creating these using object
patterns made from prisms exported from Inkscape after tracing over a bitmap.
I think I might do some more... :-)
If anybody's interested I'll put them all together in an include file at some
point...
Bill
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Attachments:
Download 'lizards.jpg' (120 KB)
Preview of image 'lizards.jpg'
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"Bill Pragnell" <bil### [at] hotmail com> schreef in bericht
news:web.49c95b7139c06a5c219167190@news.povray.org...
> Just a quickie really - this is not an image map! It is a 2-colour pigment
> pattern. I've developed a relatively quick way of creating these using
> object
> patterns made from prisms exported from Inkscape after tracing over a
> bitmap.
Nice. Very Escher-like.
>
> I think I might do some more... :-)
I am sure you will, without prompting :-)
>
> If anybody's interested I'll put them all together in an include file at
> some
> point...
Would be nice indeed.
Thomas
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Very promising!
;-)
Paolo
>Bill Pragnell on date 24/03/2009 23:15 wrote:
> Just a quickie really - this is not an image map! It is a 2-colour pigment
> pattern. I've developed a relatively quick way of creating these using object
> patterns made from prisms exported from Inkscape after tracing over a bitmap.
>
> I think I might do some more... :-)
>
> If anybody's interested I'll put them all together in an include file at some
> point...
>
> Bill
>
>
> ------------------------------------------------------------------------
>
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I like it !
and I would be interested by the method and the include file
Thibaut
> Just a quickie really - this is not an image map! It is a 2-colour pigment
> pattern. I've developed a relatively quick way of creating these using object
> patterns made from prisms exported from Inkscape after tracing over a bitmap.
>
> I think I might do some more... :-)
>
> If anybody's interested I'll put them all together in an include file at some
> point...
>
> Bill
>
>
> ------------------------------------------------------------------------
>
Post a reply to this message
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Thibaut Jonckheere <tua### [at] MAPSONyahoofr> wrote:
> I like it !
>
> and I would be interested by the method and the include file
Well, the method's not complicated, although maybe a little tedious (I did say
'relatively' quick!). Import the source image into inkscape, and trace the
fundamental repeating shape. Not the 'unit cell' of the pattern, just one
light/dark pair - in the case of the lizards, this was one complete lizard plus
the spine and eyes from the neighbour. Combine the paths. Export to POV-Ray. A
few trials (and errors) should allow you to copy and rotate the prism
sufficient to fill a unit cell. Many of them will be off the edge of the unit
cell, but no matter. Then, use an object pattern based on a union of the
prisms, and use repeat warps in x and z to populate the plane.
Some care is needed during tracing to make sure the bits of the shapes line up
with each other, but you can get away with some errors - look closely at the
lizards.
This assumes the unit cell is rectangular - I'm not sure how to approach the
hexagonal/rhomboidal patterns yet.
Bill
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amazing! And the pattern itself turned out to be refreshingly cool! :D
--
a game sig: http://tinyurl.com/d3rxz9
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Thank you for the explanations. Sounds like something worth trying :)
Thibaut
> Thibaut Jonckheere <tua### [at] MAPSONyahoofr> wrote:
>> I like it !
>>
>> and I would be interested by the method and the include file
>
> Well, the method's not complicated, although maybe a little tedious (I did say
> 'relatively' quick!). Import the source image into inkscape, and trace the
> fundamental repeating shape. Not the 'unit cell' of the pattern, just one
> light/dark pair - in the case of the lizards, this was one complete lizard plus
> the spine and eyes from the neighbour. Combine the paths. Export to POV-Ray. A
> few trials (and errors) should allow you to copy and rotate the prism
> sufficient to fill a unit cell. Many of them will be off the edge of the unit
> cell, but no matter. Then, use an object pattern based on a union of the
> prisms, and use repeat warps in x and z to populate the plane.
>
> Some care is needed during tracing to make sure the bits of the shapes line up
> with each other, but you can get away with some errors - look closely at the
> lizards.
>
> This assumes the unit cell is rectangular - I'm not sure how to approach the
> hexagonal/rhomboidal patterns yet.
>
> Bill
>
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